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Finding the Fourth Proportional to 267,905.70, 401,712.55 and 80,892.90

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Solution

The fourth proportional to 267,905.70, 401,712.55 and 80,892.90 is: 121,295.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,905.70 : 401,712.55 = 80,892.90 : x
  2. Step 2: Convert to fraction form
    267,905.70/401,712.55 = 80,892.90/x
  3. Step 3: Cross multiply
    267,905.70x = 401,712.55 × 80,892.90
  4. Step 4: Simplify right side
    267,905.70x = 32,495,693,135.90
  5. Step 5: Solve for x
    x = 32,495,693,135.90/267,905.70
  6. Step 6: Final answer
    x = 121,295.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.